Master clock time control system



Aug. 31, 1954 a. COOPER ETAL MASTER CLOCK TIME CONTROL SYSTEM 3 Sheets-Sheet 1 Filed April 23, 1951 as 54 0 I61 llllllllllllllllllllll Aug. 31, 1954 CQQPER HAL 2,687,936

I MASTER CLOCK TIME CONTROL SYSTEM Filed April 23, 1951 3 Sheets-Sheet 2 g- 31, 1954 B. COOPER ETAL MASTER CLOCK TIME CONTROL SYSTEM C) C) C) (D Flled Apnl 23 1951 mm s x ROA r. m m m m y M VIM F MM A fir W 5 5 Z 4. Y B w Patented Aug. 31, 1954 MASTER CLOCK TIME CONTROL SYSTEM Benjamin Cooper, New York, N. Y., and Albert Hohmann, Teaneck, N. J.; said Hohmann assignor to said Cooper Application April 23, 1951, Serial No. 222,386

11 Claims.

This invention relates to a master clock system for remotely controlling electrical timing devices.

The invention appertains to a master control system wherein the master clock includes minute, hour and day time controls that are synchronously operable and driven by a synchronous motor. An electro-magnetically rotatable month time control is also provided which is operable at predetermined intervals by said minute, hour and day time controls.

The master clock is adapted to synchronously control one or more remote indicators having minute, hour, day and month printing wheels. In addition to normal periodic control, said master clock provides a special control that automatically advances said remote day wheels from the last day of a month to the first day of the succeeding month for those months having less than thirty-one days. Further, there is provided a control that is operable once each hour to automatically resynchronize any minute wheels that are lagging as a result of a temporary interruption from power failure, maintenance or the like.

Such a master clock control system is exemplified in toll collection systems wherein date-time registers are provided in each of a plurality of toll booth registers. Printing mechanisms conventionally associated with each register prints an accumulation of toll register data concurrently with the date-time data. Thus, a correlation is established which facilitates analyz ing of the recorded toll register data. In such systems it is readily apparent that accurate control must be maintained over each remote datetime indicator. The present invention not only maintains the desirable accurate control but is also automatic in operation to repetitiously perform such control functions for four-year periods without manual resetting.

Accordingly, one of the objects of the invention is to provide in a master clock of the character described, minute, hour and day timing means synchronously operable by a synchronous motive means, a month timing means electromagnetically operable by said day timing means, and control means associated with each of said timing means to remotely control one or more, minute, hour, day and month indicators in synchronism therewith.

Another object resides in the provision of a master clock having means to automatically advance said remote indicators from the last day of a month to the first day of the succeeding month of those months having less than thirtyone days.

A further object is to provide in a master clock of the character described, means to automatically resynchronize once each hour any of said remote indicators that may have been temporarily stopped or otherwise put out of synchronization.

And another object is to provide in a master clock of the character described, dial indicating means operable by said minute, hour, day and month timing means to generally indicate the time relationship of said minute, hour, day and month timing means.

A further object is to provide in a master clock system of the character described, means to print against said remote minute, hour, day and month indicators operable once each hour and controlled by said master clock hour timing means.

Another object of the invention resides in the provision of a highly improved and compact master clock of the character described, which shall be easy to operate, positive in action, which shall have a large variety of applications, and yet be practical and efficient to a high degree in use.

Other ancillary objects will, in part, be obvious and in part hereinafter pointed out.

The invention accordingly consists in features of construction, combination of elements, and arrangement of parts which will be exemplified in construction hereinafter described, and of which the scope of application will be indicated by the appended claims.

In the drawings:

Fig. 1 is a front elevation of the invention illustrating the master clock control means.

Fig. 2 is a plan view of the embodiment shown in Fig. 1.

Fig. 3 is a cross-section taken along line 3-3 of Fig. 2.

Fig. 4 is a side elevation of a remote date-time printing indicator.

Fig. 5 isa rear elevation of the remote indicator with portions of the frame cut-away and the electro-magnets omitted.

Fig. 6 is a cross-section taken along line 6--6 of Fig. -5 illustrating the printing wheel controlled switch lever.

Fig. '7 is a fragmentary view of a printing mechanism.

Fig. 8 is an enlarged fragmentary view of the year wheel and control switch.

Fig. 9 is a schematic wiring diagram of the master time clock and a remote indicator.

Referring now in detail to Figures 1, 2 and 3 of the drawings, I8 designates a master time clock unit. The same comprises a frame I I having a base I2 and parallel vertical side walls I4 and I6 secured thereto and upstanding therefrom. Said side walls I4 and I6 are reinforced and interconnected by plural transverse spacer rods I8.

Journalled in suitable apertures and interposed between frame side walls I4 and I 6 are rotatable parallel, transverse shafts 20, 22, 24, 20, 28, 30 and 32. Shafts 20, 24, 28', and 35! extend forwardly through frame wall I4 and have secured thereon concentric dial cams 24a, 24a, 28a, and 32a, respectively, located in front of wall I4. Shafts 20, 22, 24, 26 and 28 are at the same horizontal level. Mounted on the outer surface of frame wall I6 are driving unit 34, relays 36, 38 and 48. Driving unit 34 comprises a synchronous motor 42, a gear reduction box 44 and a stub shaft 46 journalled in a suitable aperture in frame wall I6. Mounted on an angle bracket 48 secured to the inner surface of frame wall I8 is an electro-magnet unit 50.

Each of the cam dials 28a, 24a and 28a has recessed in the periphery thereof, a notch 52 and associated therewith are switches 2H], 222 and 226 mounted on frame wall I4. Cam dial 3212 has disposed about its periphery plural protrusions 60 and associated therewith is a switch 248 mounted on a bracket 63 secured to frame wall I4. Each of the cam dials 20a, 24a and 28a also has associated therewith, a pointer 64.

Stub shaft 46 of driving unit 34 has afiixed thereto a pinion 66 disposed in engagement with gear 68 secured to shaft 20. A pinion l affixed to shaft 20 is disposed in engagement with a gear I2 fast on shaft 22. A pinion I4 affixed to shaft 22 engages a gear I6 freely rotatable on shaft 24. Radially extending from and secured to gear I6 is a bracket I8 upon which a pawl 80 is pivotally mounted. Disposed in coaxial relation to gear 16 is a ratchet wheel 82 that is secured to shaft 24. Pawl 80 is springurged into engagement with ratchet wheel 82, therefore, shaft 24' normally rotates upon the rotating of gear I6. Gear I6 further engages a pinion 84 secured to shaft 26 which, in turn, engages a gear 86 affixed to shaft 28.

Motor 42 is of the synchronous alternating current type and is arranged to repetitiously rotate shaft 20 one complete revolution every two minutes. Accordingly, shaft 28 is designated the minute shaft.

Shaft 24 is arranged to complete one revolution every sixty minutes, and accordingly is designated as the hour shaft.

Shaft 28 is arranged to rotate one complete revolution every twenty-four hours and is therefore designated the day shaft.

Thus, continuous rotation of synchronous motor 42 effects the rotation of shafts 20, 24 and 28 in synchronous increments of seconds, minutes and hours, respectively. The faces of the respective dials are provided with indicia representative of such increments.

Shaft 24 is further provided with a knob 88 secured to the outer terminal thereof to permit manual setting of cam dial 24a relative to its associated pointer 64. Clockwise rotation of ratchet wheel 82, as viewed in Figure 3, displaces pawl 80 without disturbing the position of the related gear 16. Thus, cam dial 24a may be rotated clockwise to align a selected portion of the dial face with pointer 64. Obviously, this procedure is only required upon the initial operation of the time clock unit I0 or the restarting thereof after a temporary cessation for maintenance or the like.

Shaft 32 and cam dial 32a afiixed thereto are arranged to rotate through one complete revolution every three hundred and sixty-five days in daily increments under the control of electromagnet unit 50. Unit 50 comprises an electromagnet coil 90 mounted on a frame 92 and hav ing a cooperating armature 94 actuable thereby. Armature 94 is provided with a depending arm 96 having a switch 91 actuable thereby and a pawl 98 pivotally secured thereto. Pawl 98 is spring urged into peripheral engagement with a ratchet wheel I00 affixed to shaft 38. A pinion I02 also affixed to shaft 30 is disposed in engagement with a gear I04 secured to shaft 32. Thus, energization of coil 90 effects the clockwise rotation of arm 96, as viewed in Figure 3, to a position wherein pawl 98 is disposed in engagement with the adjacent ratchet tooth. Upon the deenergization of coil 90, spring I 66 interposed between arm 96 and frame 92, returns arm 96 in a counter-clockwise direction. Accordingly, ratchet wheel I00 is rotated clockwise one inor ment and through the related pinion and gear, shaft 32 is analogously rotated clockwise one increment. Cam dial 32a has the face thereof divided into three hundred and sixty-five increments each being representative of a twenty-four hour period. Therefore, an electrical impulse once each day and preferably timed to occur at midnight, will advance cam dial 32c one increment. The daily or twenty-four hour increments on the face of dial 32a are further grouped into consecutive units representative of the respective twelve months of the year. Plural protrusions 60 are peripherally disposed in radial alignment with those increments corresponding to the last day of each month. Protrusions 60 are provided for a purpose hereinafter appearing.

Referring to Figures 4, 5 and 6, of the drawings, there is shown a remote date-time indicator generally designated as IIIJ. Indicator IIO comprises a frame II2 having a transverse vertical portion I I4 and parallel side walls IIS perpendicularly extending therefrom. Side walls IIG are formed to provide a pair of oppositely disposed shoulders H8 in which printing wheel shaft I20 is mounted. Rotatably journalled on shaft I20 are printing wheels I22, I24, I26 and I28. Wheel I22 has embossed on the periphery thereof, indicia representative of sixty minutes disposed equidistantly in consecutive two-minute increments. Adjacent to printing wheel I 22 is printing wheel I24 having indicia representing twenty-four hours circumferentially disposed thereon in consecutive hourly increments. Secured to printing wheel I22 is a concentric ratchet wheel I 38 which is adapted for rotation by means of an electro-magnet I 32. Electromagnet I32 is mounted on a horizontally extending bar I34 secured to frame II2, as by rivets I36, and comprises a coil I38 and a pivotally mounted armature I40 having a depending arm I42. Arm I42 has pivotally mounted on the lower terminal thereof, a pawl I44 that is urged by spring I46 into peripheral engagement with ratchet wheel I30. Coil I38, when energized, attracts armature I46 thereto, thus rotating arm I42 clockwise, as viewed in Figure 4. Coil spring I43 interposed between a second depending arm I50 fixed to armature I 40 and electro-magnet frame I52, is tensioned and accordingly, upon the deenergization of said coil, spring I48 returns armature I40 counter-clockwise. A normally closed-switch I46 is arranged to be open-circuited by a protrusion I-42a on arm I42 with each actuation thereof. An adjustable screw I54 limits the counter-clockwise movement of armature I40. The clockwise movement of arm I42 moves pawl I44 from engagement with one tooth into engagement with the adjacent tooth. Thus, deenergization of coil I38 permits counter-clockwise movement of arm I42 and pawl I44 by spring I48 to rotate ratchet wheel I30 clockwise one increment. A pawl I56 also spring-urged into engagement with ratchet wheel I30 prevents retrograde movement thereof.

Secured on the opposite face of printing wheel I22 is a disc I58 having one notch therein. Disposed on transverse shaft I68, is a transfer gear I6I arranged to cooperate with disc I58 and a gear I62: fixed to the face of printing wheel I24. Thus, for each complete revolution of minute wheel I22, hour wheel I24 is rotated one increment or advanced one hour.

Printing wheels I26 and I28 operate in an analogous manner under the control of an electro-magnet I64. The peripheryiof wheel I26 is equidistantly divided into thirty-one increments representing the thirty-one consecutive days of a month. Secured to the face of wheel I26 and coaxial therewith, is a ratchet wheel I66. Depending arm I68 of armature I10 of electromagnet I64, carries a pawl I12 arranged to peripherally engage ratchet wheel I66. Torsional spring I14 urges said pawl into engagement with said wheel guided by a bracket I13 secured tobar I34. A normally closed-switch I15 is arranged to be open-circuited by protrusion I68a of arm I68 with each actuation thereof, thus, energization of coil I16, of electro-magnet I64, will through armature I10, arm I68 and pawl I12, rotate ratchet wheel I66 clockwise, as viewed in Figures 4 and 6.

Printing wheel I28 is circumferentially divided intotwelve increments each being provided with indicium representative of a respectivemonth. A transfer mechanism, comprising a disc I58 aflixed to the opposite face of wheel I26, a transfer pinion NH and a gear I62 secured to the printing wheel I28, couples wheel I28 with wheel I26. Therefore, one complete rotation of wheel I26 will, through said transfer mechanism, rotate wheel I28 one increment. A

second pawl I 56 is arranged to prevent retrograde. movement of ratchet wheel I66.

Journalled on a transverse shaft I80 interposed between sidewalls H6, are pivotal levers 4 .Pin I86 is disposed in radial alignment with the indicium representative of the last or thirtyfirst day of the month and is provided for a purpose hereinafter appearing. of lever I8I is normally disposed adjacent to the face of ratchet wheel I30 and is displaceable by means of a pin I81 affixed. to ratchet wheel I30. Pin I81 disposed in radial alignment with the indicium representative of zero minutes and is provided for a purpose hereinafter appearing. Actuable by levers I8I and I82 are normally closed switches I85 and I88, respectively.

Circuit means are provided to control remote indicator units 0 and. to this end there are provided relays 36, 38 and 40 Figure 9. Relay Hook portion I83 6 36 has associated therewith normally open switches, I98 and 200 adapted to close-circuit upon the energization of relay coil 36a.

Relay 38 has associated therewitha normally open switch 282 adapted to close-circuit upon the energization or relay coil 38a. Switch 284 has fixed contacts 284a and 2041) and a swinging contact 2840. Contacts 204i) and 2040 are normally close-circuited and are adapted to open circuit when relay coil 38a is energized. Contacts 264a, and 2041), normally open-circuited, are adapted to close-circuit with the energization of relay coil 38a.

Relay 48 has associated therewith a normally open pair of contacts 206 adapted to close-circuit upon the energization of relay coil 40a.

Relay coil 36a has one end of the winding thereof connected to the plus terminal of a conventional power supply, not shown. The other end of said coil winding is connected, as by conductor 208 to spring contact 2I8a. of switch 2I0 associated with dial 20a. Contact 2I0b of switch 2l0 is connected, as by conductor 2I I, to fixed terminal 2840, through normally closed contact 28413 to the minus terminal of the power supply, not shown. Spring contact 2I8b is arranged to engage the periphery of dial 20a and is held out of contacting engagement with contact 2I0a thereby. Switch contacts 2 I811 and 2I0b will close-circuit upon spring contact 2I0b entering notch 52 in the periphery of dial 20a. Therefore, with each two-minute revolution of dial 2811 switch 2 I0 will be momentarily actuated to energize relay 36. The energizing of relay 36 closes switches I98 and 200. Switch I96 completes a circuit from the negative potential source through closed-circuit contacts H381; and I681), conductor 2I4, conductor 2I6 of cable 2I8 and conductor 228 to one terminal of electromagnet I32. The other terminal of electro-magnet IE2 is connected to a source of positive potential. Accordingly, electro-magnet I32 is energized and pawl I44 is moved into engagement with the adjacent tooth on ratchet wheel I30. Continued rotation of dial 20a opens switch 2I8, thus deenergizing relay 36 and opening relay switches I88 and 286. Electro-magnet I32 is deenergized and spring I48 thereon urges pawl I46 to advance ratchet wheel I38 and minute printing Wheel I22, one increment.

It is. readily apparent that continuous rotation of dial 28o will pulse electro-magnet I32 every two minutes and concurrently advance minute printing wheel I22 one increment therewith. After thirty such pulses, or a period of one hour, hour-printing wheel I24 will be advanced, through the transfer mechanism, one increment.

The hour master timing device, i. e., dial 24a has. associated therewith a normally open switch 222 adapted to close-circuit momentarily during each hourly rotation of said dial. Notch 6-2 peripherally disposed in dial 240. is arranged to receive contact 22222 of switch 222 therein and permit closure of contacts 2220i and 222?) for the period of entry.

Closure of switch 222 completes a circuit from negative potential source, through closed-circuit contacts 222a, 2225], coil 38a of relay 38 to the positive source of potential. Therefore, relay 38 is energized and switch 282 is closed. Switch contact 2042) moves from engagement with contact 2040 into engagement with contact 204a and a circuit is established which energizes remote printing solenoid 299, hereinafter described.

Switch 204 further performs in a circuit employed for the purpose of automatically correcting each hour, minute-printing wheel I22 located in remote indicator H and will be hereinafter described in detail.

Associated with the twenty-four hour or daydial 28a is a normally open switch 228 adapted to close-circuit once during each twenty-four hour revolution of said dial. Dial 28a is likewise provided with a peripheral notch 52 in which contact 22617 is adapted to enter and engage contact 226a. Closure of switch 226 energizes relay 40 through a circuit from negative supply, closedcircuit contacts 226a, 22Gb and relay coil 40a to the positive source of supply. Energization of relay 40 effects the closure of normally open switch 206.

Notches 52 are disposed in circumferential alignment in dials 34a, 46a and 58a, respectively, whereby once each hour, switches 2I0 and 222 are concurrently closed and once each twentyfour hour period, switches 2H3, 222 and 226 are concurrently closed. Therefore, relays 36, 38 and 40 are concurrently energized and switches 200, 262 and 206 are concurrently closed.

A circuit is thus established from negative source of potential through closed switch 200, conductor 230, closed switch 202, conductor 232, closed switch 206, conductor 234, the coil 90 of electro-magnet 50 to the positive source of potential. Accordingly, electro-magnet 50 is energized and pawl 98 thereon is moved into an adjacent tooth on ratchet wheel I00. As soon as switch 2 I 0 opens, the circuit is opened and electromagnet 50 deenergizes. Spring-urged pawl 98 advances ratchet wheel I80 one tooth and causes pinion I02, gear I04 and gear shaft 32 to rotate in accordance therewith. Dial 320. fixed to shaft 32, rotates one increment.

Thus, it is evident that dial 32a will be advanced one increment every twenty-four hours. Concurrently, with the advancement of dial 32a, a circuit is established to the remote indicators which energizes electro-magnet I64 and therefore,

effects the advancement of day printing wheel I28 one increment. Said circuit is established by means of normally open switch 91 disposed on electro-magnet 50. Contact 91a of switch 91 is adapted to be engaged by armature arm 96 and moved into engagement with contact 911) when electro-magnet 56 is energized. A circuit then exists from the negative potential source, through closed switch 91, conductor 238, normally closed contacts 240a, 2401) of switch 240 mounted ad- J'acent to dial 32a, conductor 242, conductor 244 of cable M8, to a remote indicator, conductors 246, 248 therein, to coil I16 of electro-magnet I64, and through said coil to a positive source of potential. Therefore, electro-magnet I64 energizes and pawl I 12 moves into the adjacent tooth on ratchet wheel I66.

Deenergization of electro-magnet 50, accordingly opens switch 81 and electro-magnet I64 deenergizes. Day-printing wheel I26 is then advanced one increment by spring I1I on electromagnet I64.

Day-printing wheel I26 has equidistantly disposed on the periphery thereof in consecutive order, the numbers one through thirty-one. Therefore, thirty-one pulses are required to rotate day-printing wheel I26 through one complete revolution. The transfer mechanism advances month-printing wheel I28 one increment for each complete revolution of day-printing wheel I26. For example, at midnight on thirty-first day of 8 December, day-printing wheel I26 will be advanced from a 3| printing position to a I printing position. Concurrently therewith, monthprinting wheel I28 will advance from December printing position to January printing position.

Means are provided to automatically advance day-printing wheel I26 from the last day of a month having less than thirty-one days, to the first day of the succeeding month. It is readily apparent that the normal daily advance of printing wheel I26 cannot compensate for the indicia present on said wheel that is not applicable to the relatively short months. As an example, February is normally twenty-eight days, therefore, the indicia on said wheel representative of the 29th, 30th and 31st day is not required and said wheel must necesarily be advanced thereover. Further, the advancement of the excess indicia must be rapid to occur within the period of normal daily advancement. To this end there is provided on the periphery of year-dial 32a, plural protrusions 60 each being disposed in radial alignment with the indicia corresponding to the last day of the respective months. A spring lever 258 is pivotally supported at one end thereof by switch 240 and adapted at the other end thereof to peripherally engage dial 32a. Lever 258 is further adapted to actuate switch contact 24012 of switch 240', to move contact 2423b out of engagement with contact 248a and into engagement with contact 2400 upon being displaced by a protrusion 60. Protrusions 60 being disposed relative to the last day of each month, will on said day actuate lever 256 to prepare a special circuit. This special circuit is completed upon the closure of switch 91 by the energizing of electro-magnet 50, which, as hereinbefore described, occurs at midnight of each day. Thus, a circuit is established from the negative source of potential, through closed switch 91, conductor 238, closed contacts 248?), 2400, conductor 254, cable conductor 256, conductor 258, normally closed switch I89, conductor 252, normally closed switch I15, conductors 266, 248 to coil I16 of electro-magnet I64. Coil I16 is further con nected to the positive potential source. Thus, electro-magnet I54 is energized and pawl I12 thereon is moved into engagement with the adjacent tooth on ratchet wheel I66. After pawl I12 has moved a distance sufficient to engage the said adjacent tooth, protrusion I68a on pawl actuating arm I68 engages one contact of switch I15 and opens said switch and related circuit. Accordingly, the spring returned pawl I12 rotates day-printing wheel I26 one increment. However, with the return of pawl actuating arm I58, switch I15 once again closes and recompletes the aforesaid circuit to reenergize electro-magnet I54. The oscillating pawl I12 thus repetitiously advances day-printing wheel I26 until said wheel is disposed in the position corresponding to the first day of the next month.

Means are provided to interrupt said circuit upon said wheel being disposed on the first day of the next month. The protrusion I86 disposed on the face of wheel I 66 in radial alignment with the indicia corresponding to the first day, engages hook portion I84 of lever I82 and pivots said lever clockwise, as viewed in Figure 6. Accordingly, lever I82 engages one contact of switch I89 and opens said switch. The opening of switch I89 opens the oscillating circuit, thus preventing further oscillating of pawl I12. The rapid pulsing of electro-magnet I64 occurs while electro-magnet 50 is energized. Therefore, deenergization of electro-magnet 50 opens switch 91 and advances year-dial 32a one increment. Protrusion B is moved from engagement with lever 250 and contact 2402) of switch 240 moves out of engagement with contact 2400 and returns to engage contact 240a. I'he daily advancement of year-dial 32a and remote day-printing wheel I26 may then continue in the normal manner hereinbefore described for successive days.

Manually rotatable knob 6| facilitates the resetting of dial 32a during leap-years wherein February has twenty-nine days. Pawl 98 is displaced manually and dial 32a is rotated clockwise one increment. This operation is preferably performed on the twenty-seventh day of February, therefore, remote indicators IIO will be advanced the extra day in the normal manner and protrusion 60 will not be effective until midnight of the twenty-ninth day to rapidly advance the remote indicators IIO.

An analogous oscillating circuit is provided for rapid advancement of minute-printing wheel I22 for hourly correction of said wheel.

As hereinbefore set forth, the hourly energization of relay 30 moves contact 20 1b of switch 204 out of engagement with contact 2040 and into engagement with contact 204a. Closed contacts 204a, 20% complete a circuit from the negative source of potential through contacts 204a, 2045, conductor 268, cable conductor 270, to the remote indicator, conductor 272, through normally closed switch I85, conductor 215, normally closed switch I49, conductor 2l0, cable conductor 200, conductor 282 to one terminal of relay coil 30a. The other terminal of relay coil 36a is connected to the positive potential source, therefore, relay 96 energizes. Normally open switch I98 is closed thereby and by means of the hereinbefore described circuit, electro-magnet I32 energizes. Protrusion I l2a on armature arm I42 of electromagnet I32, after said arm has carried pawl I44 into engagement with an adjacent tooth on ratchet wheel I30, engages one contact of switch I49 thus opening said switch. The opening of said switch interrupts the energizing circuit for relay 36, therefore, switch I98 also opens and deenergizes electro-magnet I32. Minute-printing wheel I22 is advanced and switch I49 is again closed. The closing of switch I49 repeats the aforementioned cycle of repetitious operation and printing wheel I22 rapidly advances until protrusion I81 thereon engages hook portion I63 of lever I8I. Lever I8I is pivotally actuated thereby, thus opening switch I85 and consequently opening said circuit. Printing wheel I22 is now disposed in zero-minute printing position.

Means is provided'to print a record to the datetime settings of printing wheels I22, I24, I26 and I28. To this end there is provided a printing hammer 290 disposed for striking alignment with said printing wheels. As shown in Figure 7, hammer 290 is pivotally mounted on a central pivot point 292. A lever 294 is disposed on pivot point 292 having one end thereof abutting against a transverse rod 296 carried by hammer member 290. The other end of lever 294 is pivotally secured to plunger 290 of printing solenoid 299. Affixed to hammer member 290 is a platen 300 formed of a resilient material and adapted to engage a recording paper strip, not shown. Platen 300 is arranged to press against said paper strip which, in turn, presses against inking ribbon 302 and printing wheels I22, I24, I26, and I28, thus, printing a record of the settings of said wheels.

The hourly energization of relay 38 efiects the energization of printing solenoid 299 thus causing a printing operation to occur. The circuit energizing solenoid 290 may be traced from negative source of potential, through closed contacts 204b, 204a of switch 204, conductors 260, 302, cable conductor 305, remote indicator conductor 390 to one terminal of the coil of solenoid 299. The other terminal of said coil is connected to the positive source of potential.

While a single remote indicator IIO has been shown and described, it is to be understood that plural remote indicators may be disposed in parallel circuit relation for concurrent actuation.

It will thus be seen that there is provided a timing device in which the several objects of this invention are achieved and which is well adapted to meet the conditions of practical use.

The invention claimed is:

1. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, an independently rotatable member, electro-magnet means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, and means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, a remote time indicator comprising a minute wheel, electro-magnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electromagnet means for the minute wheel to advance said wheel, and means controlled by the operation of the electro-magnetic means which rotates the rotatable member for operating the electromagnetic means for the day wheel for advancing the same.

2. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means duringa predetermined angular relationship of said first, second and third means, a remote time indicator comprising a minute wheel, electromagnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnetic means for the minute wheel to advance said wheel, means controlled by the operation of the electro-magnetic means which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to the minute wheel, and a month wheel connected by transfer mechanism to the day wheel.

3. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by saidmotive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, a remote time indicator comprising a minute wheel, electromagnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnetic means for the minute wheel to advance said wheel, means controlled by the operation of the electro-magnetic means which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to the minute wheel, a month wheel connected by transfer mechanism to the day wheel, said day wheel being divided in thirty-one increments, said rotary member being divided in three hundred sixty-five equiangular increments, twelve actuating means on said member dividing said member into monthly groups of increments corresponding in number to the days in the twelve months of the year, and means controlled by said actuating means to continue turning the day wheel when the day wheel has reached the last day in any month which is less than thirty-one days until the first day increment in said wheel is reached.

4. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, 2, third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, a re mote time indicator comprising a minute wheel, electro-magnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnetic means for the minute wheel to advance said wheel, means controlled by the operation of the electromagnetic means which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to the minute wheel, a month wheel connected by transfer mechanism to the day wheel, said day wheel being divided in thirty-one increments, said rotary member being divided in three hundred sixty-five equiangular increments, twelve actuating means on said member dividing said member into monthly groups of increments corresponding in number to the days in the twelve months of the year, means controlled by said actuating means to continue turning the day wheel when the day wheel has reached the last day in any month which is less than thirtyone days until the first day increment in said wheel is reached, and means controlled by the second means to automatically successively actuate the electro-magnetic means for the minute wheel until the minute wheel reaches a predetermined position should the second means reach an end of hour position while the minute wheel is at an intermediate position, whereby to bring said minute wheel to end of hour position in synchronization with the second means.

5. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnet means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, a remote time indicator comprising a minute wheel, electro-magnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnet means for the minute wheel to advance said wheel, means controlled by the operation of the electro-magnetic means which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to said minute wheel, a month wheel connected by transfer mechanism to said day wheel, means to print against said wheels, and means controlled by said second means to actuate said printing means when said second means is in said predetermined angular relationship.

6. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, a remote time indicator comprising a minute wheel, electromagnetic means to advance said wheel, a day Wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnetic means for the minute wheel to advance said wheel, means controlled by the operation of the electro-magnetic means which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to the minute wheel, a month wheel connected by transfer mechanism to the day wheel, said day wheel be ing divided in thirty-one increments, said rotary member being divided in three hundred sixtyfive equiangular increments, twelve actuating means on said member dividing said member into monthly groups of increments corresponding in number to the days in the twelve months of the year, means controlled by said actuating means to continue turning the day wheel when the day wheel has reached the last day in any month which is less than thirty-one days, and means 13 operable by said-day'wheel to deactuate said turning'means upon said wheel reaching a predetermined angular position;

'7. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-rnagnetic means to rotate said rotatable member a predetermined increment each time said electro magnetic means is operated, means jointly controlledby said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means,"a remote time indicator comprising a minute wheel, electro-magnetic means to advance said wheel, a day wheel, electro magnetic means to advance the day wheel, means controlled by the first means to operate the electro-magnetic means for the minute wheel to advance said wheel, means controlled by the operation of the electro-magneticmeans which rotates the rotatable member for operating the electro-magnetic means for the day wheel for advancing the same, an hour wheel connected by transfer mechanism to the minute wheel, a month wheel connected by transfer mechanism to the day wheel, said day wheel being divided in thirtyone increments, said rotary member being divided in three hundred sixty-five equiangular increments, twelve actuating means on said member dividing said member into monthly groups of increments corresponding in number to the days in the twelve months of the year, means controlled by said actuating means to continue turning the day wheel when the day wheel has reached the last day in any month which is less that thirty-one days, means operable by said day wheel to deactuate said turning means upon said wheel reaching a predetermined angular position, means controlled by said second means to automatically successively actuate the electro-magnetic means for the minute wheel should the second means reach an end of hour position While the minute wheel is at an intermediate position, and means operable by said minute wheel to deactuate said automatic actuating means upon said minute wheel reaching a zero minute position.

8. In a time control system, time synchronous motive means, a first shaft driven thereby for rotation in minute to revolution relation, a second shaft driven by said motive means for rotation in hour to revolution relation, a third shaft driven by said motive means for rotation in day to revolution relation, a dial associated with each shaft, a rotatable member, a dial associated therewith, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third shafts for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third shafts, a remote time indicator comprising a minute wheel having minute indicia peripherally disposed thereon, electro-magnetic means to advance said wheel in successive two-minute increments, an hour wheel having hour indicia peripherally disposed thereon, transfer means to rotate said hour wheel in successive hourly increments, said hour Wheel arranged to rotate one increment with each revolution of said minute wheel, a day wheel having day indicia divided into thirty-one increments 14,. onthe periphery thereof, electro-magnetic means to advance said day wheel in successive day increments, a month wheel having indicia corresponding to the twelve months of the year disposed on the periphery thereof, transfer means to rotate said month wheel one increment with each revolution of said day wheel, means to actuate said minute wheel electro-magnetic means to advance said minute wheel one increment with each revolution of said first shaft, means to actuate said day wheel, electro-magnetic means to advance said day wheel one increment with each revolution of said third shaft, means to print against said wheels, and means controlled by said second shaft to actuate said printing means during each hourly revolution of said shaft,

9. In a time control system, time synchronous motive means, a first shaft driven thereby for rotation in minute to revolution relation, a second shaft driven by said motive means for rotation in hour to revolution relation, a third shaft driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-rnagnetic means to rotate said rotatable member a predetermined increment each time said electro-rnagnetic means is operated, means jointly controlled by said first, second and third shafts for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third shafts, a remote time indicator comprising a minute wheel having minute indicia peripherally disposed thereon in successive two-minute increments, an hour wheel having hour indicia peripherally disposed thereon, transfer means connected to said minute wheel to rotate said hour wheel in successive hourly increments with each revolution of said minute Wheel, means to advance said minute wheel, means actuable by said second shaft in said predetermined angular relationship to automatically synchronize said minute wheel therewith should said minute wheel be out of synchronization, and means on said minute wheel to deactuate said automatic synchronizing means when said minute wheel is in synchronization with said second shaft upon said second shaft reaching said predetermined angular relationship.

10. In a time control system, time synchronous motive means, a first shaft driven thereby for rotation in minute to revolution relation, a second shaft driven by said motive means for rotation in hour to revolution relation, a third shaft driven by said motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled. by said first, second and third shafts for operating said electromagnetic means during a predetermined angular relationship of said first, second and third shafts, a remote time indicator comprising a day wheel having day indicia divided into thirty-one increments on the periphery thereof, electro-magnetic means to advance said day wheel in successive day increments, a month wheel having indicia corresponding to the twelve months of the year disposed on the periphery thereof, transfer means connected to said day wheel to rotate said month wheel one increment with each revolution of said day wheel, means to advance said day wheel one increment with each revolution of said third shaft, means actuable by said rotatable member in any one of a plurality of predetermined angular positions to automatically actuate said day 15 wheel electro-magnetic advancing means, and means on said day wheel to deactuate said actuating means when said day wheel reaches a predetermined angular position.

11. In a time control system, time synchronous motive means, a first means driven thereby for rotation in minute to revolution relation, a second means driven by said motive means for rotation in hour to revolution relation, a third means driven by said. motive means for rotation in day to revolution relation, a rotatable member, electro-magnetic means to rotate said rotatable member a predetermined increment each time said electro-magnetic means is operated, means jointly controlled by said first, second and third means for operating said electro-magnetic means during a predetermined angular relationship of said first, second and third means, plural remote time indicators each comprising a minute wheel, electro-magnetic means to advance said wheel, a day wheel, electro-magnetic means to advance the day wheel, means controlled by the first means to concurrently operate all of the electro-magnetic means for the minute wheels to advance said wheels, means controlled by the operation of the electro-magnetic means which rotates the rotatable member for concurrently operating all of the electro-magnetic means for the day wheels for advancing the same, an hour wheel connected by transfer mechanism to each minute wheel, and a month wheel connected by transfer mechanism to each day wheel.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 420,852 Wood Feb. 4, 1890 1,282,992 Vicik Oct. 29, 1918 1,769,555 Tarbox July 1, 1930 2,083,363 Bryce June 8, 1937 2,543,983 Ostline Mar. 6, 1951 

